Powder spray gun



FIG. 1 is a left side view of a powder spray gun bearing the design;

FIG. 2 is a left-front-bottom perspective view of the powder spray gun of FIG. 1;

FIG. 3 is a left-rear perspective view of the powder spray gun of FIG. 1;

FIG. 4 is a bottom view of the powder spray gun of FIG. 1;

FIG. 5 is a top view of the powder spray gun of FIG. 1;

FIG. 6 is a rear view of the powder spray gun of FIG. 1; and,

FIG. 7 is a front view of the powder spray gun of FIG. 1.

The right side view is a mirror-image of the left side view except for the raised feature shown in FIGS. 4-7.

The broken lines in the drawings form no part of the claimed design. 

The ornamental design for a powder spray gun, as shown and described. 